Stop motion for textile weaving machines



prl 10, 1956 A. A. E. DE LUCA STOP MOTION FOR TEXTILE WEAVING MACHINES 2 Sheets-Sheet l Filed May 9, 1955 April 1o, 1956 A. A. E. DE LUCA STOP MOTION FOR TEXTILE WEAVING MACHINES Filed May 9, 1955 2 Sheets-Sheet 2 INVENTOR. V5/220 Ufff* BY 1 I I 'i n "w United States PatentA O s'ror MorroN non TEXTILE wEAviNG MAcinNEs Angelo A. DeLuca, Paterson, N. J.

Application May 9, 1955', Serial No. 506,713 7 claims. (ci. last-336.4)

This invention relates to stop motion devices for textile weaving machines.

It is an object of the present invention to provide a stop motion device for textile weaving machines which will automatically stop the weaving machine upon the yarn in the shuttle becoming exhausted and the return or" the flying shuttle to the box.

It is another object of the present invention to provide a stop motion device for weaving machines of the above type which will actuate or control motions which are already embodied in the loom. Thus, if the loom is equipped with an automatic quill changing mechanism, the invention will be usedV to make an electric contact to operate suchka mechanism and will cause a new quill to 'ce pushed into the shuttle instead of stopping the loom. Y

it is still another Object of the present invention to provide a device which can operate on the so-called backwound quills which have no bobbin, and which operates by the amount .of yarn. This device can also operate on standard bobbin-.wound quills which may be of any composition such as wood, metal, paper etc., and which need not be electrical conductors nor covered with an electrically conducting material.

Other objects o f the present invention are to provide a stop motion device for textile weaving machines bearing the above objects in mind, which is of simple construction, inexpensive to manufacture, has a minimum number of parts, and is easy to use and elfcient in operation.

For other objects and` better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a perspective view of a conventional box and. frame of a textile Weaving machine Showing a.

preferred embodiment of the, invention in operative use thereon;

Fig. 2 is a perspective view of the unit embodying the invention and shown alone;

Fig. 3 is a top plan View of the ,boxand invention shown partly in section and showing the eircuit open due to the presence of yarn in the shuttle;

Fig. 4 is an enlarged view similar to Fig. 3 but showing the yarn exhausted in the shuttle and the latter in position within the. box whereby to close the circuit and to automatically stop the machine;

Fig. 5 is a top plan view of the box and invention showing the position of the contact when the shuttle is out of the box, and

Fig. 6 is a fragmentary perspective view shown partly in section of one end of the spring forming a part of the invention.

Referring now more in detail to the drawing, and more particularly to Fig. l, 10 indicates generally a conventional textile weaving machine including the usual frame 11 and the shuttle box 12 within which arepositioned the ying shuttles 13, all in a manner well known to those ICE skilled in the art, the box 12 being supported on the vertical rod 14.

In the practice of my invention, an L-shaped bracket 15 is secured to the frame 11 by means of the fastening means 16, the bracket 15 serving to mount the guides 17 which slidably mount the vertical bar 18. The vertical bar 18 is connected to a U-shaped frame 19 by means of the braces 2t) and bottom portion 21, the frame 19 being provided with the enlarged ends 22 having the inwardly extending slot 23. An L-shaped rod 24 is connected at one end to the bottom portion 21 and serves to support the frame in cooperation with a second L-shaped rod 25 iixedly carried by a block 26 slidable on the supporting rod 14, the position of the block 26 being set by theV set screw 27 whereby to adjust the height of the frame 19.

An elongated externally threaded stud 23 is mounted within the slots 23 by means of the nuts 29 and washers 30.

A plurality of feeler units are mounted on the stud 2S in vertically spaced relationship, being indicated generally at 31. Each of these units are identical in construction and therefore only one will be described in detail.

As shown in Fig. 2, each of the feeler units 31 includes a dat block or body 32 of plastic or other suitable material provided at one end with an inwardly extending slot 33 which receives therethrough the stud 23, the blocks being positioned thereon by means of the collars 34, aswill be obvious. As shown in Fig. 4, a bushing 35 of electrically conductive material pierces the block 32 near the inner end of the slot 33 and mounts therewithin the U-shaped rod 36 of electrically conductive material, the other end of the rod 36 extending through a transverse opening 37 provided in the block 32. The block 32 intermediate the bore 37 and bushing 35 is provided with a transverse bore 33 within which is positioned a coil spring 39. As shown in Fig. 6, one end of the spring 39 is connected to a peg 40 of greater length than the diameter of the bore 38 and which is positioned against the outside of the block whereby to secure one end of the spring. The other end of the spring 39 is connected to the central portion of the rod 36.

A vertical pin 41 provided at one end of the box 12 serves to pivotally mount thereon the leaf binders 42 having win-:lows 43 aligned with the windows 44 in the ying shuttles 13 and providing access to the yarn 45 wound therewithin, theleaf springs or binders 42 being retained in resilient engagement with the shuttles by means of the secondary leaf springs 46 secured to the frame or box 12 by means of the screws 47. The binders 42 and secondary leaf springs 46 are formed of electrically conductive spring material. The secondary leaf springs d6 are grounded as at 48 by means of the conductor 49.

As shown in Fig. 3, one end of the Ufshaped rod 35 extends through the windows 43, 44 and terminates in the resilient sleeve or feeler 50 which is normally in contact with the yarn 45, the feeler 59 serving to retain the other end of the rod passing through bore 37 in spaced relationship to the binder 42 against the action of spring 39 when the shuttle 12 is within the box and contains a supply of yarn 45 therewithin, As shown in Eig. 5, when thesshuttleY 13 has left the box 1,2 the secondary spring 46 will urge the binder 42 inwardly to prevent the other end of the rod 36 from contacting the binder and to retain the circuit open. However, as shown in Fig. 4, when the shuttle 13 is within the box, the binder 42 will be moved outwardly against the action of the secondary leaf spring 46 to contact the rod 36 when. the shuttle is devoid or exhausted of the yarn 45 whereby to close the circuit.

As shown in Fig. 2, a conductor strip 51 is secured to the other side of the block 32 by means of the screw 52,

one end thereof being connected tothe insulated wire 53 chine. Such Yswitches are Vwell known to those skilled in Vthe art, and winnen-therefore, 'be described in detail.

The other end of the conductor strip 51 is in contact with the rod 36 and bushing 35 to complete the circuit.

' Thus, in order that the stop motion may be effected, two conditions must be met. shuttle 13 must be exhausted sufficiently as not to push thefeeler 50 back'against the action of the spring 39. Secondly, the shuttle 13 must be in the box 12 so that it may push the binder 42 outwardly. When both of these conditions are met, the shorter leg of the rod 36 makes contact with the binder 42 and closes the electrical cir'- cuit which operates the loom stop motion. When there f is suicient yarn in the shuttle, the yarn will push the feeier back against the action of the spring 39, which in Y turn pulls the short leg of the rod 36 out of contact with the binder 42. Likewise, when the shuttle 13 is out of box 12, the binder 42 is pushed inwardly by the spring 46 to prevent Contact between the binder and the shorter leg of the contact rod 36. In both instances, the electric circuit remains open and the loom stop motion does not operate, the loom continuing to run.

It will also be noted thatrthe device may be employed to actuate or control motions which are already embodied Vin* the loom. Thus, if the loom is equipped withl an auto- 4 filling yarn is exhausted, and means for connecting said contact rod in series with the shut off mechanism of the loom.

2. A stop motion according to claim 1, each of said feeler units comprising a block of electrically non-con- Y ductive material having a transverse bushing of conduc- First, theyarn 45 in the matic quill changing mechanism, the invention may Ybe used to operate such a mechanism and can cause a new quill to be pushed into the shuttle instead of stopping the loomrwithout departing from the spirit of the invention, or its scope, Yin any manner.

The feeler unit 31 may be-installed on either the right f Yor the left hand side of the Vloom in either a vertical or horizontal position. In the horizontal position, they will make contact with the box.

While various changes may be made in the detail construction, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claims. Y

Having thus set forth and disclosed the nature of my invention, what is claimed is:

l. A'stop motion for looms of the type including shuttle boxes with shuttles having filling spools therein comprising a plurality of feeler units, means for adjustably mounting each of said feeler units in vertically spaced relationship adjacent each of the shuttles, a leaf spring binder of electrically conductive material adapted to bear on each of the'shuttles, each of the shuttles and binders having aligned windowsproviding access to the filling yarn therewithin,'a secondary leaf spring of conductive material bearing on each of saidy binders whereby to urge the same inwardly when the shuttles are out of the box, said secondary leaf springs being grounded, each ofsaid feeler units including a U-shaped conductor rod having Y.unequal legs, the longer of said legs being adapted to extend through said aligned windows in contact with the filling yarn, spring means for retaining U-shaped rod in contact with the filling yarn, the shorter leg of said U- shaped rod being adapted to contact said binder when said binder is urged outwardly by the shuttle and when the tive material slidably receiving the longer arm of said conductor rod, said block having a second transverse bore slidably receiving the shorter arm of said conductorrod therethrough, said block intermediate said bore and bush-Y ing having a` transverse bore, a coil spring positioned within said transverse bore and secured at one end therewithin, the other end of s'aid;coil spring being connected to the central portion of said U-shaped rod.

3. A stop motion according toV claim 2,VV said means for connecting said conductor rod to the shutoff mechanism of the loom comprising a conductor strip Ysecured to the side of thebloclayoneyendrof saidconductor strip being electrically connected to the circuit of the shut off mechanism, the other end of 'said conductor strip having an opening and receiving therethrough the longer arm of said conductor rod and in contactk with one end of said bushing. f 'Y 4. A stop motion according to claim 3, Ysaid means for n'iounting said feelerunits comprising a VU-shaped frame having enlarged ends, each of said enlarged ends having aligned inwardly extending slots, an elongated externally threaded stud positioned vwithin said slots, means for securing said stud within said slot, each of said blocks having an inwardly extending slot receiving said stud therethrough and collars adjustable on said stud on the upperandlower surfaces of Veach of said blocks whereby to support the same, and means'for slidably mounting said U-shaped frame on the frame ofthe loom, and adjustable means for supporting the same.

stationary bracket secured to the frame of the loom, ver- Y tical guides secured to said bracket, a vertical rod slidably mounted within said guides, said vertical rod being connected fixedly to said VU-shaped frame.

6. A stop motion according to claim 5, saidmeans for supporting said frame comprising an L-shaped rodfixedly carried by said U-shaped frame, a block adjustable along the supporting rod of the box, said set screw means for locking the position of said block relative to said supporting rod, and a second U-shaped rod iixedly carried by said block and adapted to support the free end of said first U-A Y shaped rod, the planes of said second and rst U-Shaped rods being disposed at substantially right angles to each other. Y

7. A stop motion according to claim 6, the longer leg of each of said U-shaped conductor rods being externally threaded on a resilient sleeve adjustable along each of'said externally threaded ends.

References Cited in the YfileV of this patent UNITED STATES PATENTS 2,625,183 Dufourd et al. -n Nov. 28, 1951 2,720,895 Y Nims Oct. 18', 1955 FOREIGN Vrarinrrs f 504,733 Canada Aug. 3, 1954 655,252 Great Britain July 18, 1951 856,750 France Apr. l, 1940 y fumi@ n 

